Slide-valve mechanism for internal-combustion engines



Feb. 1 j 1,6'175019 f. 927 c. H. MATTHIESSEN, JR I SLIDE VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES Filed Nov. 26/1923 3 Sheets-Sheet 1 Fig.1,

I I INVENTOR.

ATTORNEYS?" Feb. '8, 1927.

. r 1, 17,019 C. H. MATTHIESSEN, JR

SLIDE VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES Filed'Nov. 2a, 1923 3 Shets-Sheet 2 'II'IIIII HHIIH Arm 4.

Patented Feb. 8,1927. i

* awe SLIDE-VALVE Mechanism 'roainrnnnargoomsusrion ENGINES.

- Application filed November 26,1923, Serial No.

i invention relates to a; slide valve mechanism forinternal combustion engines of the four cycle type and more particularly to improvements in the invention illustrated in my copendingv application Serial No. 440,573, filed January 28th, 1921, forslide valves; for gas engines. 1

Oneof the objects of my inventionis to cient oilingsystem for a sliding plug and sleeve being open.

sleeve valve mechanism and particularly for the plug andsleeve valve mechanism illustrated in my copending applic'ationoabove referred to. V p

Another object of my invention is to provide a bottle liner whose body forms the explosion chamber and whose neck forms the valve chamber withinwhich neck plug and sleeve reciprocate. The liner is spaced from the engine casing so as to form a water, jacketandis shrunk or secured to the easing atthe neck leaving the body free to expandthus permitting the use of differentmetals-for the liner and casing. The com: bustion chamber is sealed by the plug and sleeve at the valve end and by the working piston at the other.

With the above and other objects in view .my invention consists in the parts,improve ments and combinations more fully pointed out hereinafter. v

Referring now to'the drawings, illustrating'one form of the invention:

Figure 1 is a' longitudinal section showing my improved valve mechanism with the sleeve about to begin the inlet stroke, the exhaust being closed and the interior discharge mouth of the inlet passage of the Figure 2 is a section showing the parts toward thejmiddle of the inlet stroke.

Figure 3 shows the diaphragm joint between thelower end of the bottle liner and the engine casing, permitting expansion of the liner.

Figure 4 shows .duction gearing. I

Figuresb, 6,. 7 and 8 illustratethe posithe valve driving speed re 676,991., a1id in Great-Britain October 31, 1923.1

t-ion. of the parts at' the full open position of the intake, at the middle of the compression, the firing point and the exhaust open respectlvely. V Y 1 i igure 9 illustrates the-inlet passages in theliner and casing, and

portsand oil grooves. i The valve is mounted at head of thecylinder 1, preferably in' line' with the axis of the cylinder-in a throat' which is preferably narrower thanthe bore of the ,cylinder,, thus reducing the size of the Figure 10 illustrates the sleeveh with th p eithe partsq' The cylinder, in accordance with-the invention forms a bottle shaped liner and valve chamber, having a body 2, forming the explosion chamber, the coaxial neckB ofthe bottle forming the valvechamber inwhich the valvereciprocates. .The neck ofthe'bot- .tle may. thus be inserted Within and shrunk '75.; .ior'secured to the water jacketing portion 4 of the valve containing head of the engine casing 5, leaving the body ofthe liner free to expand, thus. permitting the use of different metals vfor casing and liner the latter for example being of iron or steel and the :former of aluminiumalloy. V The end-0f the bottle is sealed to the casing 5, to prevent water jacket leakage, bydiaphragm 6' and .boltsi, so that when heated or cooled it may slide slightly with relation to the casing, The space 7 between the bottle and the casing forms a water j acketfor the body of the bottle which latter constitutes the combustion chamber and the bore for thewo-rking piston. The bottle l1ner may be cast and machined to any desired wall thickness throughout its length so that at the combustion chamber, the wallsiare of uniform thickness avoiding unequal distribution of metal around the combustion chamberand resulting in more uniform cooling.

In accordance with my invention, the water i jacketed valve containing head'is provided with two diametrically opposite inlet pass fective mixing of the gases, and an exhaust passage 10. I also provide a singlesleeve valve l 1, with an inlet port which consists of two openings 12, 13 oppositely arranged.

sages 8, 9, which extend partly around the valve containinghead, thus producing ef-.

side of the casting by the usual tools, after assembly "of the bottle and the casting. The ports extend circumferentially and the metal between them gives a substantial support to the upper part of the bottle and forms the water cooled portion which carries the.

rings across the port openings. The same principle applies to the sleeve. In the sleeve, the ports alsoeXtend circumferentially and the metal between the ports is water cooled bymeans of the adjacent water jacketed portion of the head of the casing, containing the valve. By thus doing away with gas corridors around the valve containing head, which gas corridors feed a belt of inlet ports andby bringing the cooling surfaces next to the sleeves more effective cooling and better lubrication are obtained. Suitable means are provided for drivingthe sleeve. As illustrated, the sleeve is driven from an overhead valveshaft 14 by a two to one speed reduction gearing from the main crank shaft 14 of the engine by gearing 143 14 14, is, the sleeve being connected-t0 the overheadv shaft by suitable means such as a connecting rod 15. As indicated, the connecting rod is secured to the sleeve by suitable means for example by means of a pivot. The sleeve is cut away at its upper part as shown so. as to permit the end of the connecting rod for the plug to pass within :the sleeve and bring the rod bearing nearly in linewith the center of pressure.

- "In acordance with my invention, I make the height of the inlet mouth of the sleeve (measured in the direction of the length of the sleeve) and its cross-section greater, than the. height and cross-section of. the inlet pas- Y sage- By mamas, hei le mout of the slee e mov nt and ut of eg te ing lation with the inlet passage in the valve head liner and remains in registering relation therewith for a substantial part of the stroke of the sleeve. This ensures a full opening of the inlet and a plentiful supply or gas during a large. part of the inlet stroke. By lessening the height of the suppassage in the valve containing head I essen the height of the valve containing head and reduce the height of the inlet ports. I

The sleeve is provided with a skirt 16 which opens and closes the exhaust passage 10. The inlet port controls the inlet and does not move into registering relation with the exhaust passage, the exhaust passage being controlled by the skirt 16. Rings 17 are used for securinga gas tight fit between the sleeve and the valve seat or throat in which the sleeve moves.

' Turning now to the plug 1 8, this also is "driven in the form of invention illustrated,

from the valve shaft 14. A connecting rod 19-connects the plug with the valve shaft, the connecting'rod beingv pivotall-y secured to the plug. The plug is'provided with one or more rings 20 seated in a groove in the i plug.

Means are provlded for oiling the valve and plug without permitting the oil to reach the combustion chamber. Oil drops or is supplied from above as from the valve shaft to the cup shaped top of the sleeve. Excess oil is taken off by the respective oil rings 21, 22 on plug and sleeve scraping the oil into the two sets of oil holes 23, 24. The ring 21 in the upper part of the plug scrapes the excess oil into the oil holes 23 in the upper part of the sleeve- Asshown in Figures 2 and 5 the excess oil passes into the head 100 of the engine casing from which it dis charges to the crank case. The remainder of the oil works down beti veen thesleeve and bottle liner and any excess is scraped by the upper ring22 of the sleeve into oil holes'24 in the bottle liner, where the excess" drains off on slanting head 25, andis discharged to the crank case, leaving oil to lubricate between sleeve and plugand sleeve and bottle liner, without it passing intothe combustion chamber. By means of grooves 25, 25 arranged in the metal of the sleeve between the sleeve ports and starting from a point in the sleeve below ring 22, oil is carried to the lower or skirt part of the sleeve.

It will be seen by an inspection of the Figures 1 2, 5, 6, 7 and 8 that the plug is out of the way of the inlet port during the inlet stroke and that it acts during the compression and firing strokes to prevent the gases from being forced back from the combustion chamber of the engine through the inlet port of the sleeve. In FiguresQ and 5, the oil ring 21 on the plug is shown in a posit-ion to discharge oil through ports 2-3, 24. In

Figure 8, the oil ring 22 is shown in position for discharging oil thru the ports 24.

Spark plugs are inserted a t-projections 26, 27, carried by the bottle and suitable bushings 28, 29 are provided to seal the open- .ings in the casing so as to prevent the es- 'four cycle type, comprising a valve cont-aining head, a sleeve slide valve reciprocating therein, said valve provided with a port whose lips open and close the inlet passage in the valve containing head, said valve'having a skirt portion controlling the exhaust-,1

and a movable member within the sleeve for blocking the port in the sleeve during the compression and tiring strokes, said sleeve valve and valve containing head beingqprovidedwith oil holes, the movable member therein, fsai'd valve provided 'with a port distributing the feeding of the-oil through the valve -m'echani'sm.f*

f QJAn-inter'nal combustion engine ofthe- 1 fourcycletype, comprising a valvecontaim ing head, a sleev'e'islideva'lve reciprocating whose lips openfand close the inlet passage in the valve containing head, said valve having a skirt portioncontrollingthe ex-;'

haust, and a' inovable'member within 1 the sleeve for blocking the port in the sleeve during the 'compre'ssionanch firing strokes, said sleeve valve and valve containing head being provided with oil holes, the movable member and the sleeve valve beingprovided with rings cooperating with said oilholes,

therebydistributing the feeding of the oil through the valve mechanism, said sleeve member provided with oil groove's'to' supply oil to the skirt portion-of the sleeve valve.

3. Aninternal combustion engine of the four cycle type, comprising a valve containing head, a sleeve slide valve reciprocating therein, said Valve provided with an inlet port and a movable member within the sleeve valve, said valve containing head and sleeve valve being provided with oil holes and said movable memben and sleeve valve being provided with rings cooperating with said oil holes to distribute, flow of oil through the valve mechanism, I, c

4., An internal combustion engine-of the four cycle type, comprising in combination an engine casing, a longitudinal valve containing head, a sleeve slide valve reciprocat-, ing therein, said valve provided with an inlet port, a movable plug within the sleeve valve, a longitudinally expansibleliner for said casing, said liner consisting'ot a bottle V forming the cylinder and a longitudinal neck forming its extension, the neck of the bottle forming the valve chamber in which the valve and plug reciprocate, said neck being secured to said valve containing head and an expansion joint for securing the lower end of the liner to the casing, thereby permitting the body oftlie liner v.to expand.

5. An internal combustion engine of the four cycle type, comprising in combination an engine casing, a valve containing head,

a sleeve slide valve reciprocating therein, said valve provided with an inlet port, .a movable plug withm'the sleeve valve, a longitudinally expansible liner for said casing,

said liner consisting of a bottle formin the cylinder and itsextension, the neck 0% the bottle forming the valve chamber in which the valve reciprocates, and an expansion joint for securing the lower end of the liner to the casing, said expansion joint compris ing a diaphragm attached to the liner and means for securing the diaphragm to the casing.

6; An internal combustion engine- 0f; the

four cycle type, "comprising: in combination an enginecasing alongitudinal valve con' f taming head, a sleeve slide valve're'ciprocatingtherein, said valve provided with in-, let POrt, a movable Plug Within the sle'eve' valve, and a liner tor said casing-3 said liner consisting of a bottle forming vthe 1 cylinder and a coaxial longitudinal neck forming its extension, the 'neck of the bottle forming the valve chamber in-which the valve and plug reciprocatep said -neck being vshrunk 1 upon;

said valve containing-head,- said linerbeing V spacedtrointhe engine casingsoas-to pro vide a water jacket between the'casing and liner, the body of the liner being free to expand. v i V c 7. Aninternalcombustion engine of the four cycletype comprising in combination an engine casing, a valve containing head, a V sleeve slidevalve reciprocating therein, said valve provided with an inlet port, a movable plug within the sleeve valve, and a liner;

for said casing, said liner consisting ofa bottle forming the cylinder and a coaxial longitudinal neck forming its extension, the neck of the bottle forming the valve chamber in which the'valve reciprocates, said neck being secured to said valve containing head, said liner beingspaced from the engine cas; ing so as to provide a Water jacket between the casing and the liner, the liner being provided with aperturedprojections for receiv the openings in the casing so as to prevent the escape of water, comprising perforated bushings through 'which the spark plugs pass, said bushings fitting the projections on the bottle liner which receive the spark plugs and also engaging the casing.

8. An internal combustion engine of the four cycle type, comprising in combination a valve containing head, said valve containing the spark plugs, and'means for sealing i ing head provided with opposite inlet passages extending only partly about the head, a sleeve slide. valve reciprocating therein, said sleeve valve provided with two inlet ports oppositely arranged and each extending only partly around the valve containing head so as to produce effective mixing of 115 the gases,"said'sleeve valve having a skirt the gases, a water jacket. adjacent to said sleeve valve, said valve having a skirt por tion controlling the exhaust, and a m'ovable member Within the sleeve forblocking the port in the sleeve during the compression and firing strokes. V

' 10. An internal combustion engine of the four. cycle type, comprising in combination a valvecontaining head, said valve contain ing head provided with opposite inlet passages extending only partly about the head, a sleeve slide valve reciprocating therein, said sleeve valve provided with two inlet ports oppositely arranged and extending name to this only partly around the valve containing head sov as to produce eifective'm-ixing of the gases, a movable plug within the; sleeve valve and a liner secured to said valve containing head, said liner consisting of a bottle forming the cylinder andiits coaxial neck, the neck of the bottleforming the valve chamber in. which the valve reciprocates, said liner provided with two ports oppositely arranged so as to register with the ports in the sleeve. p

' In testimony whereof, I have signed my specification. I CONRAD ,HENRY MATTHIESSEN, Jr, 

